Friedrich Schorlemmer, a theologian and sharp critic of the East German communist regime who became one of the leading figures of the peaceful revolution that toppled the Berlin Wall, died on Sunday. He was 80 years old. As a preacher, Schorlemmer became a leading figure in the 1980s peace movement in the communist German Democratic Republic (GDR), and he took part in a demonstration in 1983 that forged swords into ploughshares, a biblical reference that became a slogan for the movement. He is also remembered in part for his call for non-violence during a mass demonstration on East Berlin’s Al…